3. Choose the correct option to complete the sentences: 1) _ I make a cup of tea for you? (Have / Do / Shall) 2) Teachers don't _ wear uniforms. (have to / has to / must) 3) I sometimes _ to look after my little brother. (have / must / shall) 4) Do you _ go to school on Saturdays? (have to / have / must) 5) I _ forget Lucy's birthday. (don't have to / doesn't have to / mustn't) 6) Jack _ help his mum on Saturdays. (have to / has to / shall) 7) _ Bella have to do her homework now? (Has / Is / Does) 8) Steve _ have to pay for his ticket. It's free. (don't / doesn't / not) 9) _ we have to go to school tomorrow? (Do / Have / Does) 10) We _ light a fire in the forest. (don't have to / mustn't / mustn't to) 11) I don't _ wear a tie to school. (has to / must / have to) 12) You _ arrive at two o'clock. (shall / has to / must)